Home / 5,209.58-7,816.80-2,580.32

Finding the Fourth Proportional to 5,209.58, 7,816.80 and 2,580.32

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Solution

The fourth proportional to 5,209.58, 7,816.80 and 2,580.32 is: 3,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.58 : 7,816.80 = 2,580.32 : x
  2. Step 2: Convert to fraction form
    5,209.58/7,816.80 = 2,580.32/x
  3. Step 3: Cross multiply
    5,209.58x = 7,816.80 × 2,580.32
  4. Step 4: Simplify right side
    5,209.58x = 20,169,845.38
  5. Step 5: Solve for x
    x = 20,169,845.38/5,209.58
  6. Step 6: Final answer
    x = 3,871.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.